Finding the Fourth Proportional to 102,443, 141,360.96 and 57,116.68

Step by Step Solution

1. Step 1: Write the proportion equation
   102,443 : 141,360.96 = 57,116.68 : x
2. Step 2: Convert to fraction form
   102,443/141,360.96 = 57,116.68/x
3. Step 3: Cross multiply
   102,443x = 141,360.96 × 57,116.68
4. Step 4: Simplify right side
   102,443x = 8,074,068,716.81
5. Step 5: Solve for x
   x = 8,074,068,716.81/102,443
6. Step 6: Final answer
   x = 78,815.23